Star Railroad: Savior Kevin forced to work overtime

Introduction: I seem to have traveled through time and become a post-liberation Kevin. I originally planned to stay quietly until the end of the Honkai Book, but in the end I was thrown into the world of Star Dome Railway... Do I still have to work overtime even if I time-travel? (Elements of this book: Kevin + chat group, he will go to other worlds for a walk, and save the world by the way. Kevin is not necessarily a pirated copy.)